Answer:
A - acid
When the pH of something goes over 7, it is considered a acidic substance, because it is not safe/authorized for any humans to drink it. Also, you ca not drink something below the pH of 6 because it is an alkaline, which is also not safe to drink.
The answer is Octave a symbol used to notate a pitch and its
duration. Note is also used to identify a pitch or a tone. Octave is the
interval between one musical pitch and another with half or double its
frequency. It is defined by ANSI as the unit of frequency level when the base
of the logarithm is two.
The correct answer is 25 apartments.
By looking at the graph, you can see that this is the case because this is the point where monthly rent, apartments, and supply intersect. This intersection represents the optimal number of properties for a property owner to rent out to other people.
In the Mexican-American war, the Mexican's were not prepared for the battle: they did not have a strong enough army to handle America and they were already falling apart.
Source was History.com if you need more